>> terrible tragedy of this is we've talked about these kinds of things forever. we've watched it in israel, watched it in london, watched it in other countries and we kept saying, it could happen here. sporting event, wherever there's a crowd and we're shocked again by it. all the due diligence we have, all the police presence, all the cameras, these terrorists, whether it's domestic or foreign, we doen know yet, they can get the people and they can cause what they term as terrorism and we just have to continue to pursue it and more due diligence and more giving up freedoms. lou: i want to say, too, michael, and you're exactly right, there are also folks, the fellow taking off his t-shirt to put over a wound, others taking their belt, you know, a limb and put a tourniquet on a bleeding leg. you know, that to me is also a very inspiring. we have lots of good folks.